22 August 2014 CW 1.06-μm pumped ytterbium-holmium co-doped all-fiber laser for 2.05 μm
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Proceedings Volume 9286, Second International Conference on Applications of Optics and Photonics; 92860K (2014) https://doi.org/10.1117/12.2065563
Event: Second International Conference on Applications of Optics and Photonics, 2014, Aveiro, Portugal
Abstract
An Ytterbium-Holmium co-doped all-fiber CW laser is reported. The fiber used in the laser setup has been fabricated through the conventional MCVD process in conjunction with the SD technique and finally drawn using a standard fiberdraw tower. The laser was built in a linear Fabry-Perot configuration in which two fiber Bragg gratings reflecting at 2.05 μm were used as the cavity couplers. Under 1.06-μm in-core pumping of the fiber, CW lasing at 2.05 μm was provided due to energy transfer Yb3+→Ho3+. The laser demonstrated low threshold (~0.8 W), moderate slope efficiency of lasing (~8.4% when measured vs. pump power launched into the active fiber), and high stability: during 6 hours its output power fluctuated within a 3% range. The laser spectrum width at a 3-dB level using an optical spectrum analyzer with a 37-pm resolution was measured to be ~70 pm.
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Alexander V. Kir'yanov, Yuri O. Barmenkov, Vladimir P. Minkovich, "CW 1.06-μm pumped ytterbium-holmium co-doped all-fiber laser for 2.05 μm", Proc. SPIE 9286, Second International Conference on Applications of Optics and Photonics, 92860K (22 August 2014); doi: 10.1117/12.2065563; https://doi.org/10.1117/12.2065563
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